<template>
  <ul class="todo-list">
    <!-- completed: 完成的类名 -->
    <li :class="{completed: item.isDone}" v-for="(item, index) in arr" :key="item.id">
      <div class="view">
        <input class="toggle" type="checkbox" v-model="item.isDone" />
        <label>{{ item.name }}</label>
        <button @click="del(index)" class="destroy"></button>
      </div>
    </li>
  </ul>
</template>

<script>
export default {
  props: ['arr'],
  methods: {
    del(index) {
      this.$emit('del', index)
    }
  },
}
</script>
